Nembrotha rutilans? from Indonesia

March 5, 2007
From: Aaron Fink

Note added 4 March 2008: Following Pola et al (2008) the name N. rutilans has been replaced by Nembrotha purpureolineata [see message #21419].

I recently took an extensive trip to the Raja Ampat in Indonesia where I encountered a large number of nudibranchs, several of which I was able to capture photographically, but remain unable to identify.

Locality: Wasego Island, 40 ft, Indonesia, Banda - Raja Ampat, 27 October 2007, coral reef. Length: 3 in. Photographer: Aaron Fink.

I am seeking assistance. Many thanks.
Aaron Fink

afink01@comcast.net

Fink, A. S., 2007 (Mar 5) Nembrotha rutilans? from Indonesia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19337

Dear Aaron,
Photos like this make me wonder if Nembrotha lineolata and   Nembrotha rutilans are just colour forms of one species. Although Nembrotha lineolata, as its name suggests, usually has longitudinal lines down the body, there are plenty of examples showing the lines merging into patches [see message #14679]. I will identify your animal as N. rutilans, but as you will see if you look at earlier messages on these two species, the colour patterns merge, and the reproductive organs seem identical.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Mar 5). Comment on Nembrotha rutilans? from Indonesia by Aaron Fink. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19337

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Nembrotha purpureolineata

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